Polymide, onse ozungulira zida za Polymer, achititsa chidwi cha malo ofufuza ambiri ku China, ndipo mabizinesi ena ayambanso kupanga - zinthu zathu zakuthambo.
I. Mwachidule
Monga luso lapadera, polima limagwiritsidwa ntchito kwambiri muviation, Awespacelectics, nanometer, matrumer yamadzi, laser komanso minda ina. Posachedwa, mayiko akulemba kafukufukuyu, chitukuko ndi kugwiritsa ntchitopolymideMonga imodzi mwamapukiki abwino kwambiri m'zaka za zana la 21. Polymide, chifukwa cha mawonekedwe ake mwamphamvu mu magwiridwe antchito ndi synthesis, ngakhale amagwiritsidwa ntchito ngati zinthu zopangira kapena zothandizira, osadziwika kuti "popanda Polymide, sipakanakhala ukadaulo wamgwirizano lero".
Chachiwiri, magwiridwe antchito a Polymide
1. Malinga ndi kusanthula kwa thermagravimetric kuwunika kwa Polymic kwathunthu, kutentha kwake nthawi zambiri kumakhala pafupifupi 500 ° C. Polymide syntusizeted kuchokera ku BIPHHYL DI4dRide ndi P - Phenylesdiamine ali ndi kutentha kwa matenthedwe a 600 ° C ndipo ndi imodzi mwazilowezi zokhazikika kwambiri mpaka pano.
2. Polymide amatha kupirira kutentha kwambiri, monga mu helium helium ku - 269 ° C, sizikhala zopanda chiyembekezo.
3.Polymideali ndi mphamvu zambiri zamakina. Mphamvu yakusaka kwa mafayilo osakwaniritsidwa ali pamwamba pa 100mmph, filimuyo (Kapton) ya Hompopnylene Polymide ili pamwamba pa 170mpon) pamwamba pa 10mka, ndi BIIDYL Ty 400m. Monga pulasitiki zoinjini, kuchuluka kwa filimu yakale nthawi zambiri 3 - 4gpa, ndi fiber ikhoza kufikira 200gpa. Malinga ndi kuwerengera kwa chizolowezi, chitsamba chophatikizika ndi phthalic tenthydride ndi p - Phnyleniamine akhoza kufikira 500gpa, chachiwiri chokha kwa kaboni.
4. Mitundu ina ya polymiyaidide ndi yopanda mphamvu mu organic sodic ndi khola kuti muchepetse ma acid. Mitundu ya General sagwirizana ndi hydrolysis. Chomwe chikuwoneka ngati chochepa kwambiri chomwe chimapangitsa polymide osiyana ndi ena apamwamba - ma polima ogwiritsira ntchito. Khalidwe lokhala loipa kuti diandride ndi diamine imatha kuchilitsidwa ndi alkalinel hydrolysis. Mwachitsanzo, ku Kapondon filimu, mtengo wobwezeretsa ungafikire 80% - 90%. Kusintha kapangidwe kake kumathanso kukhala hydrolysis - mitundu yolimbana, monga kupirira 120 ° C, maola 500 a kuwira.
5. Kuchulukitsa kokwanira kwa Polymide ndi 2 - 5-3 × 10 - Mitundu ya BIPHEYL itha kukhala 10 - Mitundu ya payekha ikhoza kukhala mpaka 10 - 7 ° C.
6. Polymide ali ndi kukana kwa ma radiation, ndipo kanema wake ali ndi mphamvu yosunga mphamvu ya 90% pambuyo pa 5 × 109rad mwachangu elekron irradiation.
7.Polymideili ndi katundu wambiri, wokhala ndi diect yosasinthika pafupifupi 3.4. Mwa kufotokozera aluorine kapena kufalitsa mpweya ma nanometer ku Polymide, diect yosakhazikika amatha kuchepetsedwa pafupifupi 2.5. Kutayika kwa sekondale ndi 10 - Mphamvu ya Idelect ndi 100 - 300KV / MM, Guangcheng thermoplastic polymide ndi 300kv / mm stancer ndi 1017ω / cm. Izi zimakhalapo pamlingo wapamwamba kwambiri pamagetsi osiyanasiyana komanso kuchuluka kwake.
8. Polymide ndiokha - Kuthana ndi polymer ndi utsi wotsika.
9. Polymide ilibe malo otsika kwambiri pansi pa vacuum yapamwamba kwambiri.
10. Polymide ndi wopanda - Poizoni, angagwiritsidwe ntchito kupanga matebulo ndi zida zamankhwala, ndipo amatha kupirira zigoli zikwiziro. Ma polima ena amakhalanso ndi zinthu zopanda pake, mwachitsanzo, iwo ndi omwe ali - hemolytic muyeso wogwirizana ndi magazi ndipo osayesedwa munthawi ya Vitro Cytotoxicity.
3.. Njira zingapo za kaphatikizidwe:
Pali mitundu yambiri ndi mitundu ya Polymide, ndipo pali njira zambiri zophatikizira, kotero ikhoza kusankhidwa malinga ndi ntchito zosiyanasiyana zogwiritsira ntchito. Mtundu wamtunduwu mu kapangidwe kake ndiwovuta kwa anthu ena omwe ali nawo.
1.Polymidezimapangidwa makamaka kuchokera ku dibasic andhydrides ndi maseweleni. Moommers awiri awa amaphatikizidwa ndi ma polymers ena ambiri a helybenzimidazole, polybenteazole, polyquinone, gwero la zinthu zopangira ndilosiyana. Pali mitundu yambiri ya dianydrides ndi masentimita, ndi ma polymides okhala ndi katundu osiyanasiyana akhoza kupezeka ndi mitundu yosiyanasiyana.
2. Polymide ikhoza kukhala yokhazikika pa kutentha kochepa ndi dianydride ndi diamine mu porthala, mutakhala ndi zosungunulira za 300 Acewatic nohydride ndi tertive Amine a Aminests amathanso kuwonjezeredwa acid a asidi wamankhwala onunkhira ndi cyclization kuti mupeze yankho la polydedide. Diamine ndi dianydride amathanso kulamuliridwa komanso polycondenas m'matunga otsekemera, monga phenocles, kuti mupeze polhemide mu gawo limodzi. Kuphatikiza apo, polymide amathanso kupezekanso chifukwa cha ma dibasic acid eder ndi diamine; Itha kusinthidwanso kuchokera ku polyamic acid ku Polysoimace koyamba, kenako kupita ku Polymide. Njira izi zonse zimabweretsa zosavuta pokonza. Choyamba chimatchedwa njira ya PMR, yomwe imatha kupeza mafayilo otsika, yankho lalikulu, ndipo lili ndi zenera lotsika kwambiri pakukonzekera zida zophatikizika; Zomaliza zimawonjezera kuti zithandizire kusandulika, kopanda pake - ma molecular mankhwala amatulutsidwa panthawi yosintha.
3. Malingana ngati kuyera kwa dianhydride (kapena tetracid) ndi diamine ndi woyenereradi, ngakhale kuti ndi wolemera kwambiri, ndipo ndizosavuta kupeza kulemera kwamphamvu kwa anine kapena unit amine.
4. Polyconded of Dianhydride (kapena tetracid) ndi diamine, bola ngati ma molar a Rualar afika pa kulemera kwa ma tepi olemera kwambiri, potero kukonza makonzedwe ndi ufa. Zimachitika mosavuta.
5. Ndikosavuta kuyambitsa magulu opindulitsa pamtengo kapena unyolo kuti apange ma oligomers, ndikupeza thermoseting Polymidet.
6. Limagwiritsa ntchito gulu la Carboxyl ku Polymide kuti likwaniritse kapena kupangika kwamchere, ndikuwonetsa magulu a ma acyl kuti mupeze zithunzi za aPYYL kapena kugwiritsidwa ntchito pokonza mafayilo a LB.
7. Kukonzekera kwakukulu Polymide sikutulutsa mchere wamtundu wa itorganic, zomwe ndizopindulitsa makamaka pakukonzekera zinthu zothandizira.
8.polymideKanema pa zojambula zapakhomo, makamaka zida zokhala ndi malo osagwirizana, mwa zotulukapo.
Post Nthawi: Feb - 06 - 2023